Acinetobacter Pittii FL3-2 for Aerobic Sewage Phosphorus Removal
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Solution Overview
Problem
Existing phosphorus removal methods for domestic sewage, particularly in rural high-altitude mountainous areas, are sensitive to environmental factors and lack efficient biological treatment agents with robust phosphorus accumulation and removal capabilities under aerobic conditions.
Innovation Solution
The use of Acinetobacter pittii strain FL3-2, isolated from high-altitude soil, which exhibits strong phosphorus accumulation capacity and can remove phosphorus from sewage under solely aerobic conditions, forming the basis of a bacterial composition for effective sewage treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional polyphosphate-accumulating organisms are used for phosphorus removal in rural high-altitude mountainous areas, then phosphorus removal function is achieved, but the system becomes highly sensitive to environmental factors such as pH, temperature and dissolved oxygen
Solution Approach 1:
The patent changes the biological parameter by replacing conventional polyphosphate-accumulating organisms with Acinetobacter pittii FL3-2, which has been isolated and adapted to high-altitude environmental conditions. This strain exhibits significantly reduced sensitivity to pH, temperature and dissolved oxygen fluctuations while maintaining effective phosphorus removal capability, thus resolving the contradiction between removal stability and environmental adaptability
2Reliability
If conventional aerobic/anaerobic sequencing batch processes are used for phosphorus removal, then phosphorus accumulation is achieved, but the process complexity increases
Solution Approach 1:
The patent extracts and eliminates the anaerobic phase from the conventional aerobic/anaerobic sequencing process by using Acinetobacter pittii FL3-2, which can accumulate phosphorus effectively under solely aerobic conditions. This simplifies the treatment process from two-phase sequencing to single-phase aerobic treatment while maintaining phosphorus removal efficiency, resolving the contradiction between accumulation capability and process complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Acinetobacter pittii strain FL3-2 achieves a mean phosphorus removal efficiency of 60.67% from simulated domestic sewage, demonstrating its suitability for treating phosphorus-rich sewage in high-altitude regions with improved resilience to environmental factors.
Implementation Method 1
The Acinetobacter pittii strain FL3-2 exhibits strong phosphorus accumulation capacity, and the bacterial composition including the same is suitable for the treatment of phosphorus-rich domestic sewage in high-altitude mountainous regions
Implementation Method 2
The Acinetobacter pittii strain FL3-2 can achieve phosphorus accumulation under solely aerobic conditions without complex aerobic/anaerobic sequencing batch processes
Data Source
AI summary
An Acinetobacter pittii strain is provided, which is Acinetobacter pittii FL3-2 with a deposit number of CCTCC NO: M20232618. A bacterial composition is provided, which includes the Acinetobacter pittii FL3-2 as an active component. A method for phosphorus removal from a sewage sample is also provided, in which the Acinetobacter pittii FL3-2 is inoculated into the to-be-treated sewage sample.